stroboscope
Sign in to saveAlso known as strobe
thumb|A bouncing ball captured with a stroboscopic flash at 25 images per second. thumb|A strobe light flashing at the proper period can appear to freeze or reverse cyclical motion
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Encyclopedic overview
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- Mechanical
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- Fechner color
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thumb|A bouncing ball captured with a stroboscopic flash at 25 images per second. thumb|A strobe light flashing at the proper period can appear to freeze or reverse cyclical motion
A stroboscope, also known as a strobe, is an instrument used to make a cyclically moving object appear to be slow-moving, or stationary. It consists of either a rotating disk with slots or holes or a lamp such as a flashtube which produces brief repetitive flashes of light. Usually, the rate of the stroboscope is adjustable to different frequencies. When a rotating or vibrating object is observed with the stroboscope at its vibration frequency (or a submultiple of it), it appears stationary. Thus stroboscopes are also used to measure frequency.
Excerpted from Wikipedia’s “stroboscope” article, available under the CC BY-SA 4.0 licence.